Block One Text 8

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Author:
DesLee26
ID:
284079
Filename:
Block One Text 8
Updated:
2014-09-25 09:07:33
Tags:
Garcia
Folders:
Microbio
Description:
Test One
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  1. a.       Plasma Membrane: consists of __; less rigid due to lack of __
    b.      Bilayer
    c.       Proteins:
                                                                  i.      __may function as enzymes that catalyze __, _, and __
                                                                ii.      __:  can be removed from the membrane only after disrupting the lipid bilaer; can be __, have pores, etc.
                                                              iii.      __: have carbs
                                                               iv.      __: carbds and lipids
    • phospholipids
    • sterols

    • peripheral 
    • chemical reactions, structural support, and mediators of change in membrane shape during movement

    • integral
    • transmembrane
    • Glycoproteins
    • Glycolipids
  2. a.       Functions
    •                                                               i.      Selective permeability
    •                                                             ii.      Break down nutrients and produce energy (have enzymes capable of catalyzing the chemical reactions that break down nutrients and produce ATP)
    • 1.       Pigments can be in the membranes: chromatophores or thylakoids
    •                                                           iii.      Mesosomes: artifacts that develop by process used for preparing specimens for EM
  3. 1.       By disrupting the membrane’s phospholipids, a group of antibiotics known as __cause leakage of intracellular contents and subsequent cell death
    polymyxins
  4. a.       Cytoplasm of prokaryotes
                                                                  i.      nucleoid, ribosomes, and reserve deposits called inclusions are present; protein filaments are responsible for rod and helical cell shapes
  5. a.       Nucleoid
                                                                  i.      Has __
                                                                ii.      Can be spherical, elongated, or dumbbell shaped
                                                              iii.      The chromosome is attached to the __
                                                               iv.      __ may be present; __; replicate __
    • single, long, circular, bacterial chromosome
    • plasma membrane
    • Plasmids (small circular, double stranded DNA)

    extrachromsomal genetic elementsindependently of chromosomal DNA
  6. a.       Ribosomes
                                                                  i.      Made up of __subunits, which consists of protein and rRNA
                                                                ii.      Differ from eukaryotic ribosomes inn the number of proteins and rRNA molecuels they contain; how?
    1.       Pro: __ ribosomes
    2.       Euk: __ribosomes
    a.       S= Svedberg units, which indicate the relative rate of sedimentation during ultra-high-speed centrifugation
                                                                                                                                          i.      Sedimentation rate is a function of __, __, and _
    • two 
    • smaller and less dense
    • 70S
    • 80S
    • size, weight, and shape of a particule
  7. 1.       The subunits of a 70S ribosome are a small __ subunit containing one molecule of rRNA and a larger __ subunit with two molecules of rRNA
                                                                ii.      Antibiotics can inhibit __
    • 30S
    • 50S
    • protein synthesis or interfere by attaching
  8. a.       Inclusions: __
                                                                  i.      __: large inclusions that take their name from the fact that sometimes they stain red with certain blue dyes
    1.       Collectively known as __: represents a reserve of inorganic phosphate
                                                                ii.      __: consist of glycogen and starch
                                                              iii.      __: lipid storage
    • reserve deposits for nutrients
    • Metachromatic granules
    • volutin
    • Polysaccharide granules
    • Lipid inclusions
  9.                                                               i.      __: lipid storage
                                                                ii.      __: in bacteria who get energy by oxidizing sulfur and sulfur-containing compounds
                                                              iii.      __: contain ribulose 1,5-disphosphate carboxylase
                                                               iv.     __: has rows of gas vesicles; maintain __so cells remain at depth of water sufficient for oxygen, light, and nutrieints
                                                                 v.      __: inclusions of iron oxide surrounded by invaginations of the plasma membrane
    • Lipid inclusions
    • Sulfur granules
    • Carboxysomes
    •  Gas vacuoles
    • buoyancy 
    • Magnetosomes

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